une petite news interessante, surtout pour les "benchmarkers" 

Donc d'après un développeur, celui qui est à l'origine de ThrottleStop et RealTemp, Windows Defender consommerait plus de %CPU qu'on ne le pense. Et particulièrement sur les CPU INTEL de 8eme à 11eme Gen. AMD ne serait pas touché par ce "bug".

Kevin discovered a fascinating bug with Windows Defender, the built-in security software of Windows, which causes significantly higher performance impact on the processor than it should normally have. Of course a security software is bound to have some (small) performance impact during real-time protection, but this is much bigger

The first sign that something is happening is that HWiNFO will be reporting a reduced "Effective Clock" speed when the CPU is fully loaded. A much bigger problem is that when Defender is affected by the bug, performance of your machine will be significantly reduced. For example, a Core i9-10850K running at 5.00 GHz all-core loses 1000 Cinebench points (or 6%). Such a performance loss has been reported by owners of Intel Core 8th, 9th, 10th and 11th Gen, both desktop and mobile CPUs, on both Windows 10 and Windows 11. AMD processors are not affected.

Il a développé un petit utilitaire pour réduire cet impact : counter control

Source détaillée de l'info:
https://www.techpowerup.com/295877/windows-defender-can-significantly-impact-intel-cpu-performance-we-have-the-fix